Matrix square root. Currently it uses a simple iterative algorithm described in Wikipedia.
It only works with invertible matrices that have a real solution. For diagonalizable matrices you can try matFunc sqrt.

Solution of a general linear system (for several right-hand sides) using lapacks' dgesv or zgesv.
It is similar to luSolve . luPacked, but linearSolve raises an error if called on a singular system.
See also other versions of linearSolve in Numeric.LinearAlgebra.LAPACK.